Sewing machine



Oct. 21, 1941. E. c. ZABLOCKI SEWING MACHINE Filed Aug. 9, 1938 4 Sheets-Sheet l 7 fi fi 5 J if 5, M. f a 5 a m MA. I. N/ R E :II; 9 M 4 A l l v. I M 4 M W 4/; 1 0 m 7 7 WM 7 5 g WY 4 M B W w 6 a Z 5 2% 6 fig 4 a x 6 a; 4 i i w 4 in f,

1941- E. c. ZABLOCKI 2,260,203

SEWING MACHINE Filed Aug. 9, 1938 v 4 Sheets-Sheet 2 Fill 00,, #E- 4.

I I 54} in 4 INVENTOR A TTORNZ YS E. C. ZABLOCKI SEWING MACHINE Filed Aug. 9, 1958 4 Sheets-Sheet 5 z s p; w a W 2/ N r a a a 7 A a r W a F1 ./MH( 6 n J M M J. 5. Z 45 w 2 M a 4 9 p H M ,0 an M i a m .u HI A an o [I [III-{U OWHH|I a V Z 5 8+ d 1 g i Q 0 o 8 a 4 a w a 9 z a z i Oct. 21, 1941.

E. c. ZABLOCKI SEWING MACHINE 4, Shets-Sheet 4 Filed Aug. 9, 1958 INVENTOR ye/7a (LZkZ/arii. Q a

Patented Oct. 21, 1941 SEWING MACHINE Eugene C. Zablocki, Detroit, Mich.,

Manufacturing Company,

assignor to Detroit,

Mich., a corporation of Michigan Application August 9, 1938, Serial No. 223,886

17 Claims.

My invention relates to upholstery machines, and more particularly to the sewing mechanism including the sewing head or heads and looper mechanism for such machines, being especially useful in stitching together relatively thick and tough material used, for example, as vehicle upholstery material for automobile'seat cushions and the like which often contain a top layer of tough fabric, a bottom layer of foundation material or sheeting, and an intermediate layer of relatively thick padding, the whole constituting a relatively thick and tough mass which is difficult for the needles to penetrate.

The present trend in machines and methods for making upholstery material of laminated structure is to speed up production and thereby produce in a given work period a greater number of finished upholstery units than has heretofore been possible with similar machines of the prior art. The movement of the work through the machine has been considerably speeded up by virtue of developments evolved by me, see for example, my co-pending application Serial No. 201,055, filed April 9, 1938, covering an upholstery machine and method with which the sewing mechanism of my present invention is employed. Prior to my present invention and that of my co-pending application mentioned, no sewing mechanism was capable of operation at a speed comparable to and synchronized with the speed of operation of the mechanism for moving the work through the machine. Many previous attempts have been made to produce sewing mechanism capable of keeping up with the speeded up movement of the work but within my knowledge none of such mechanism has proved to be successful. Considerable difiiculty has been experienced with the breakage of needles in the previous mechanism during attempts to operate the needle and said mechanism at speeds as great as were required to function with the speeded up movement of the work. 1

One of the objects of my invention is to provide an improved needle or stitch forming mechanism for a sewing machine particularly adapted for commercial application, such as for stitching upholstery materials fed continuously past the needle mechanism, in which improved relatively simple and efficient means is provided for reciprocating the needle bar in a vertical or upright path and also for oscillating the needle bar, thereby imparting a forward and rearward movement to theneedle during the vertical movement thereof. The present improvements in the operation of the needle bar and the needle carried thereby are such as to permit effective use of the machine for stitching relatively thick tough materials ordinarily difficult to penetrate, permitting the needle to travel forwardly with the work during the forward feed thereof without necessitating any retardation of the travel of the work and hence permitting higher operation speeds and consequent increase in produc- It is an important feature of my present invention to provide relatively simple and sturdy sewing mechanism capable of attaining high speeds comparable to the speed of movement of the work and capable of producing perfect stitching of the laminations of the work regardless of the speed of movement of the work and the feeding mechanism therefor.

Another object of my invention is to provide an improved high speed sewing mechanism in the form of independent units or batteries of units driven by a common source of power and synchronized with improved looper mechanism, together with improved presser members or feet associated with the needles of the sewing mechanism.

Another object of the present invention is to provide gear controlled and operated needles capable of attaining high speeds without any appreciable wear of the parts.

A further object of my invention is to provide an improved type of sewing mechanism having improved means for lubricating its moving parts to reduce to a minimum the wear on said parts.

The above and other objects and advantages of the invention will be apparent from the following description and. appended claims when considered in connection'with the accompanying drawings forming a part of this specification in which like reference characters designate corresponding parts in the several views.

In said drawings:

Fig. 1 is a fragmentary front elevational view illustrating the application of my improved sewing mechanism to an upholstery making machine.

Fig. 2 is a detail horizontal sectional view, on

an enlarged scale, taken substantially along the line 2-2 of Fig. 1, looking in the direction of the arrows.

Fig. 3 is an enlarged fragmentary horizontal sectional view taken substantially along the line 3-3 of Fig. 1, looking in the direction of the arrows.

Fig. 7 is a slightly enlarged fragmentary detail 7 sectional View taken substantially along the line 1-1 of Fig. 4. I y I Fig. 8 is an enlarged vertical sectional-view taken substantially along the line a. a-or; F1g;.1,'

looking in the direction of the arrows.

Fig. 9 is an enlarged vertical sectional viewg taken substantially through lines 9- 9 of Fig, 1, looking in the direction of the arrows; and i Fig. 10 is asectional view taken substantially along the line ill-Ill of Fig.9, looking in the direction, of the arrows..

Before explaining in detail the present invention it is to be understood that the invention is not limited in its application tothe details of construction and, arrangementof parts illustrated in the accompanying drawings, since the invention is capable of other embodiments andof being practiced or carried out in various ways,

Also it is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation, and it is not intended tolimit the invention claimed herein beyond the requirements of the prior art Referring now to the drawings, I have shown therein a preferred form of sewing machine and looper mechanism therefor embodying my invention. The mechanism shown is adapted to be applied to an upholstery machine of the character.

disclosed by my aforementioned co-pending application. As shown, the sewing mechanism is formed in separate units each adapted to be attached to the cross beam 20 of the machine, see

particularly Figs. 1, .4 and 5, and to be secured;

thereto bybolts 2|, the several units each being longitudinally adjustable along the cross beam.

When mounted in position, the sewing .mechanism units are located above the bed I9 of the upholstery machine and spaced therefrom, as

best seen in Fig. 4.

Each unit, as shown, comprises a body portion or frame 22 having an upper forwardly projecting portion 23 and a lower forwardly projecting common drive shaft for a battery of sewing portion 24. A removable cover plate or housing;=-

25 is preferably secured to the frame 22. by bolts or the like 26. Interposed between the cover and the cross beam 20 is 'a bearing block or member 28 secured to the frame 22 by concealed cap a key 45. V

suitable bearings at opposite sides of the'machine screws or bolts 29, see-particularly Fig. 4. The

housing 25 is provided with an oil cup or lubricant reservoir 30 for supplying a constant body of oil to the working parts of the machine, as hereinafter described. The housing 25 serves to conceal the gearing and other mechanism for;

operating the sewing needle and acts as a guard opposite sides of the lower projection 24 of the frame. This fork-like member serves as a guide during any vertical adjusting movements of the presser foot relative to the frame 22 and also prevents its becoming displaced laterally with respect to the needle and needle bar. The shaft 3| is surrounded by a compression spring 34 which has a bearing upon a sleeve or-col-lar 35 carried adjacent the lower'end of the shaft and pinned thereto at 35a and normally held in con-' tact with an abutment or boss formed on the projection 24 of the frame. The upper end of the compression spring finds its bearing in the lower edge of a threaded sleeve 36 which surrounds the upper end of the shaft 3| and is secured in position, as shown, by means of a knurled nut 31 which is threaded over the split upper end 36a of the sleeve. By reason of the sleeve 36 being threaded through the portion 23 of, the frame and being slidable onthe shaft 3l, it ean be adjusted longitudinally independently ofthe. shaft 3i by turning the nut 3T." By so adjusting the sleeve the tension of the spring 34 can be varied so as to increase or decrease the pressure of the presser foot upon the work (not shown). Thus the sleeve 36 serves" as a spring tensioning or compressing'member and alsoas a guide for the shaft 3|. If it should be desirable to vary the position of the presser foot 32'with respect to the bed [9, this can be accomplished by'releasing the'pin 3511. which holds the collar 35 to the shaft 3|, moving the shaft either up or down and re-pinning the collarto the shaft atanother position along said shaft. This would take care of any substantial variation in thethickness of the work passing beneath the presser foot.

Referring to Figs. 4' and 5, it will be seen that split bearings 38 are mounted upon the forwardly projecting portions 23 of the frame structure. ,Journalledwitln'n these bearings is a sleeve 39 upon which is mounted the hub portion 40 of a pair of similar driving gears 4| of equalsize. The

hub portion 4!] is keyed to the sleeve orbushing 39 by a key 42 and is also looked to the sleeve by means of a pointed screw plug '43 so that the hub, gears and bushing will be fixed together as a unit. It will be understood that the halv'e'sfbf the split bearings 38 are provided with semicircular bearing faces inthe usual manner... .A

heads or mechanisms extends transversely of the machine in front of and slightly above the cross beam 2!]. This shaft is shown at 44 and is keyed to the rotatable'sleeve' orbushing 3'9'by The drive shaft 44 is 'J'ournalled'in and at spaced points therebetween. In Fig. 1 one such intermediate bearing for the shaft is shown at 46, this bearing being in the form ofa bracket bolted to the cross beam or bar 20. The shaft 44 is driven by suitable gearing mounted" in a gear casing or box, located at one side of the to prevent the hands of the operator from com- I ing in contact with the moving parts; 7

As seen also in Fig.4, the forwardly projecting portions or members Hand 24 of the frame 22 are drilled to permitthe passage therethrough of a vertical. rod3l to the lower end of which a presser foot ormember 32 is attached. The presser foot. has a slot 32a,v for the passage of the needle and is provided with a substantially fork-like member 33, the legs of which embrace machine. This mechanism is best shown in Figs. 1 and 2 wherein an upright frame member [8 supports a gear housing shown as'a whole at 47 which is preferably bolted to the frame member l8 and which carries a plurality of spaced roller bearings 48 in which the shaft 44 is journalled. Pinned or keyed to the shaft 44 adjacent its outer .end is a bevel gear 49 located within a chamber of the housing 4'l,' which chamber is closed at its. front end by a removable faceplate Located also within the chamber is a pinion gear 5| meshing with the bevel gear 49' and being secured to one end of a horizontal shaft 52 which is journalled in bearings 53 carried by a casing or housing 54. The opposite end of the shaft 52 carries a bevel gear 55 located within another casing or housing 56. The bevel gear 55 meshes with a pinion 51 carried by a vertical shaft 58. This shaft 58 extends downwardly into a housing 59 and carries at its lower end a pinion 60 which meshes with a bevel 6| located within the housing and mounted on one end of a horizontal shaft 62, see Fig. 3. The shaft 62 is journalled in spaced bearings 63 supported in a housing 64. The-other end of the shaft 62 carries a larger bevel gear 65 which is in mesh with a small bevel gear 66, the latter being mounted upon the end of a substantially right angularly disposed hori- -zontal shaft 81 journalled in spaced bearings 58 supported by a housing 69. This shaft 61 also carries a bevel gear 19 confined by housing 69 which is in mesh with a similar bevel gear ll carried by a vertical shaft 12. The shaft 12 extends upwardly and is journalled in spaced bearings 13 located within a housing 14, see particularly Fig. 9. The end of the shaft 6'! beyond the bevel and the right hand bearing 68, see Fig. 3, extends into a circular block or disk and is secured thereto, such as by means of a pin 1511. A crank arm 16 is mounted upon the end of a pin H which in turn is eccentrically secured to or mounted .in the outer face of the block 15. This crank arm 16 will be described more fully hereinafter and is connected with the looper mechanism of the machine. From the foregoing it will be seen that the shaft 44 which rotates the .gears 4| and the shaft 61 for driving the crank arm 16 are interconnected by the series of gearing and shafts above described so that the sewing machine head or unit and its operating -mechanism are synchronized to operate in timed relation with the looper mechanism.

The gears 4| which are driven by the shaft 44 mesh with a pair of smaller gears 80 of equal diameter which are carried by a common shaft or hub 8| (Figs. 4 and 6) journalled in a sleeve 82 fixed to a bearing 82a carried by the projecting portion 23 of the frame structure. Eccentrically mounted in each end of the shaft or hub 8| and extending outwardly therefrom is a pin 83. Each pin 83 carries a rectangular block 84 which is fixed to the pin and which is adapted to move withthe shaft 8| as the gears 80 are rotated. Each of the blocks 84 is provided with a guideway to receive the notched-out or forked upper end 85 of a rockable ,lever or walking beam shown as a whole at 86. The portions or members 85 embrace opposite side edges of the blocks 84. The lower end of the rockable lever 861s mounted upon a fixed shaft 81, the ends of said shaft being mounted in the spaced forwardly projecting portions 24 of the frame 22.

A pair of similar gears 88 is provided in front of the gears 80, these gears being mounted on axially aligned stub shafts 89 journalled in bearings 90 forming a part of the front overhanging or top portion of the frame 22.

Referring particularly to Fig. 5, there is fixed to the inner face of each of gears 88 an eccentric throw member or crank cheek 9|. An eccentrically mounted stub shaft 92 connects the tapered ends 9la of the eccentrics together and provides a crank for a connecting rod or needle bar reciprocating member 93. The lower portion of the connecting rod 93 is preferably in the form of a housing or enclosing shield 94 for a portion of the needle bar, to the face of which is attached a thread guide bar or member 95 which, as shown, is secured in place by a screw or the like 96. The lower end of the housing 94 is bifurcated to provide spaced lower end portions or legs 94a, see particularly Fig. 5. The bifurcated ends are provided with aligned threaded openings to accommodate a pair of screw threaded centering pins 98, these pins having conical or tapered ends which engage in conical sockets formed in a spacing block 99 through which-the needle bar or shaft I09 extends.- The block 99 is fixed to the'needle bar by'means of screws 99a (Fig. 4) and when the parts are assembled as best shown in Fig. 5 the block 99 is held in fixed position between the lower ends 94a so that movement of the connecting rod 93, 94 will effect reciprocation of the block 99 and the needle bar I00 relative to the supporting guides 86a and 86b of the rockable lever or walking beam 86. The block.99, by reason of the pins and sockets, provides a fulcrum or axis of oscillation for the forward and rearward rocking movement of the connecting rod 93, 94 during its reciprocation. It will be understood that the connecting rod or member 93, 94 may be attached to the stub shaft 92 in any suitable manner as by means of a split bearing, the parts of which are held together by bo ts or the like 93a, see particularly Fig. 4. As best seen in Fig. 5, the pins 98 for supporting the block 99 in positionare held in place by' nuts 98a.

As seen in Figs. 4 and 5,'and as previously described, the lower end of the rockable lever or beam 86 is mounted upon the transverse fixed shaft 81 mounted in suitable bearings formed in the lower forward extension 24 of the frame 22.

When the driving gears 4| are rotated by the drive shaft 44, the front and rear pairs of meshing gears 88 and respectively, of equal diameter, are rotated. By reason of the eccentrics 9| and the connecting rod or member 93, 94, which, because of its attachment to the eccentrics, is given a combined reciprocating and rocking motion, the needle shaft H19 and the needle |99a will likewise be given a combined reciprocating moton in a substantially vertical plane and a simultaneous tilting or rocking motion toward and from the supporting frame structure 22. A rocking motion is at the same time imparted to the lever 86 by reason of the driven gears 80 and the sliding blocks 84 connecting these gears with the bifurcated upper ends of the lever 88. It will be understood that the connecting rod or member 93, 94 which imparts the reciprocating motion to the needle bar and needle and the rockable or oscillatable lever 86 carrying the needle bar guides 86a and 86b operate in unison but that the throw of the eccentric for the connecting rod 93 is greater than that of the eccentric for the oscillatable lever 86. The aligned guides 86a and 86b for the needle bar move in conjunction with the oscillatable lever 86 and are thus maintained in the proper position for permitting the free reciprocation of the needle bar as well as effecting the oscillation thereof regardless of the angularity which the bar and needle might assume while in motion.

By reason of the present improved and novel construction the needle may be reciprocated at any desired speed, this speed being synchronized with the speed of movement of the work being fed to the sewing instrumentalities or units of the machine. The fore and aft tilting or rocking movement of the needle is regulated so that the needle will rock in the direction of movement of .the work so as to prevent any possibility of breaklooper provided for each needle.

age of the needle. Heretofore considerable difficulty has been experienced as the result of the breakage of needles and this was true even with the relatively slow speed of movement of the needles and work in previous machines of the general nature of that of the present invention.

Looper mechanism of improved character is associated with the sewing machine heads, there being, an oscillatable, and transversely movable As referred to above, the'looper operating mechanism or drive is synchronized with that for efiecting the oper- ,ation or action of the needles so that the looper will function in timed relation to the application,

of stitches to the work. As shown, a common oscillatable shaft I02 extends transversely of the machine at a point located below the work plate I1 and in advance of the bed I 9, see particularly Fig. 4. This shaft I02 is journalled for oscillating and restricted endwise movement in bearings I021; carried by the upright frame members H3 at opposite sides of the machine. The shaft I02 is oscillated, as shown, by means of a crank arm connection I6 oneend of which is attached at IT to the rotatable block I previously. mentioned. The connection is made eccentrically of the block as seen in Fig. 8 so that the rotation of the block 15 imparts a combined rotary and reciprocating motion to the crank arm I6. The outer end of the arm I6 is pivotally connected to the lower end of a shaft engaging member or link HIM. The upper end of the member I00 is clampingly engaged with the shaft and held in fixed position thereupon by a cap screw, bolt or the like I05.

Each looper I06 is, as shown, supported by an oscillatable block [01 clamped to the shaft I02 by means of an adjusting bolt or screw I08, see

, Fig. 4. Thus, as the circular block or member 75 is driven to impart reciprocating as well as rocking movement to the crank arm IS, the shaft I02 is oscillated so as to oscillate the looper I06 in'timed relation with the reciprocation of the needle I00a so as to loop the threads applied to the work.

It is desirable to impart to the looper, in addition to its oscillation fore and aft, a sidewise movement so that the looper will traveler move in a substantially oval-shaped or elliptical path about the'needle. To accomplish this, the shaft I02 has attached thereto a yoke-shaped membershown as a whole at I03 in Figs. 1', 9 and 10. This yoke member is supported by means of split rings II8 arranged on opposite sides of the member I03 and clamped to the rod or tube I02 by set screws H9. The U-shaped outer end of the yoke memshaped end of the member I03. The headsof the blocks contact the periphery of'the eccentric It will be seen, therefore, that'as the shaft I2 rotates the eccentricI23, the blocks I25 will be This movement, through the medium of the blocks I2I and clamp rings II8, will cause axial or longitudinal movement of the shaft I02 in opposite directions, thus shifting the looper or series of loopers attachedto the shaft laterally of the machine during their oscillation in directions longitudinally of the machine, or at right angles to the shifting or lateral movement thereof.

It will be understood that the number of loopers and their supporting members 101 varies in accordance with the number of sewing machine needles and units associated with the machine.

Improved common means or a reservoir for supplying oil to the various moving parts of the sewing machine mechanism is provided so that oil in the oil cup or reservoir 30, Figs. 1 and4, will flow or be fed through a suitable main pipe line and tube connections H0. m, 2 and ll 3to' the various bearings, joints, eccentrics, and other moving parts of the mechanism. In addition to the pipe or tube connections for the oil feeding tnere are provided conduits orpassageways such as those shown at IN, 5 and lit to convey oil to other parts of the mechanism not reached by the pipe line connections above referred to. At various points of the mechanism additional-oil cups are provided so that all of the Working parts are constantly supplied with oil to thereby recuce friction and wear and also to minimize sounds and noises created by the operation of the mechanism.

It is desirable also to oil the parts shownin Figs. 9 and 10 and particularly the periphery of the eccentric member I23. Oil for this purpose is injected through oil fittings I25 and I26. The

oil entering through fitting I26 will pass through the drilling I21 into engagement with a wickI28 which is spring pressed toward the eccentric I23 by means of a concealed spring I29. Oil applied through 011 cup I25 finds its way through drilling I30 to the pivotal point I22 so as to maintain this part of the mechanism well lubricated.

I claim:

1. In a sewing machine having a bed and a support extending transversely thereof, the combination of a vertically reciprocable needle bar adapted for adjustment lengthwise of said support, means for reciprocating said bar, a lever eccentrically mounted at its upper end and 0scillatable about a fixed pivot located at its lower end at one side of the needle bar, gear means for oscillating said lever, and guide means carried by the lever for guiding the needle bar during its vertical movement and also for simultaneously oscillating said needle bar.

2. In a sewing machine having a bed, the combination of a vertically reciprocable needle bar adjustable transversely of said bed, means for reciprocating said bar, a lever eccentrically mount-. ed at its upper end and oscillatable about a fixed pivot located at its lower end at one side of the needle bar, gear means for oscillating said-lever, and vertically spaced guide means cari'ed by the lever for guiding the needle bar during its Verti cal movement and also for simultaneously oscillating said needle bar. I I

3. In a sewing machine, the combination of a vertically reciprocable needle bar, a drive gear forv reciprocating said bar, two gears of likediameter in mesh with and driven by said drive 7 gear in the same direction, a crank throw memalternately engaged by the high and low sides ,of

her on one gear, a connecting rod attached at one of. its ends to th crank throw member and pivoted at its other end to the needle bar intermediate the ends of the bar for reciprocating the same, a lever pivoted at one end and eccentrically driven at its opposite end by the other of the said two gears to oscillate the lever about its piv-' t, and guides on said lever for guiding the needle bar during its vertical reciprocation, said guides cooperating with the needle bar at opposite sides of, the .point of connection of the connecting rod and needle bar for oscillating said needle bar during its reciprocating movements.

4. In a sewing machine thefcombination of a vertically reciprocable needle bar, driving mechanism comprising a pair of spaced gears of equal diameter, a common driving gear meshing with the spaced gears, a connecting rod eccentrically connected to one of said pair of gears and tosaid needle bar for vertically reciprocating the needle bar, and an oscillatable lever eccentrically connected to the other of said. pair of gears for imparting a forward and rearward oscillatoy move-, ment to the needle bar during its reciprocation.

5. In a sewing machine, the combination of a vertically reciprocable needle bar, driving mechanism comprising a pair of spaced gears of equal diameter, a common driving gearmeshing with the spaced gears,'a connecting rod eccentrically connected to one of said pair of gears and to said needle bar for vertically reciprocating the needle bar, and an oscillatablelever eccentrically connected to the other of said pair of gearsfor imparting a forward and rearward oscillatory movement to the needle bar during its reciprocation, the eccentric drive for the connecting rod imparting a greater throw thereto than the eccentric drive for the oscillatable lever.

6, In a sewing machine, the combination of a vertically reciprocable needle bar, driving mechanism for said bar comprising a pair of spaced gears of equal diameter, a connecting rod eccentrically connected to said spaced gears and to said needle bar for vertically reciprocating the needle bar, an oscillatable lever associated with said needle bar, a second pair of spaced gears of equal diameter, an eccentric connection between the oscillatable lever and said second pair of gears for imparting a forward and rearward oscillatory movement of the needle bar during its reciprocation, and a common driving gear meshing with both pairs of spaced gears.

7. In a sewing machine, the combination of a vertically reciprocable needle bar, driving mechanism for said bar comprising a pair of spaced gears of equal diameter, a connecting rod eccentrically connected to said spaced gears and to said needle bar for vertically reciprocating the needle bar, an oscillatable lever associated with said needle bar, a second pair of spaced gears of equal diameter, an eccentric connection between the oscillatable lever and said second pair of gears for imparting a forward and rearward oscillatory movement to the needle bar during its reciprocation, and a common driving gear meshing with both pairs of spaced gears, the eccentric connection for the connecting rod imparting a greater throw thereto than the eccentric connection for the oscillatable lever.

8. In a sewing machine, the combination of a vertically reciprocable needle bar, a connecting rod attached at one end to said bar for reciprocating the same, an oscillatable lever associated with the needle bar for imparting a forward and rearward oscillatory movement to the needle bar during its reciprocation, a pair of spaced gears of equal diameter, an eccentric connection between said connecting rod and interposed between said pair of gears, a second pair of gears of equal diameter, an eccentric connection between said oscillatable lever and saidsecond pair of gears, and a common driving gear meshing with both pairs of gears. v v q a 9, In a sewing machine; the combination of a vertically reciprocable needle bar, a connecting rod attached at one end to said bar for reciprocating' the same, an oscillatable lever associated with the needle bar for imparting a forward and rearward oscillatory movement tothe needle bar during its reciprocation, a pair of spaced gears of equal diameter, an eccentric connection between said connecting rod and interposed between said pair of gears, a second pair of spaced gears of equal diameter, an eccentric connection between said oscillatable lever andsaid second pair of gears, and a' common driving gear meshing with both pairs of gears, the eccentric connection for the connecting rod imparting a greater throw thereto than the eccentric connection for the oscillatable lever.

10. Ina sewing machine, the combination of a vertically reciprocable needle bar, a connecting rod attached at one end to said bar for reciproeating the same, an oscillatable lever attached at oneend to a fixed pivot and associated with the needle bar for imparting a forward and rearward oscillatory movement to the needle bar during its reciprocatioma pair of spaced gears of equal diameter, an eccentric connection between said connecting rod and interposed between said pair of gears, a second pair of spaced gears of equal diameter, an eccentric connection between said oscillatable lever and said second pair of gears, a common driving gear-meshing with both pairs of gears, and common means for supplying lubricant to a plurality of moving partsof the machine includingsaid pivot and. said eccentric connections, I l

11. In a sewing machine, the combination of a Vertically reciprocable needle bar, a drive ear for reciprocating said bar, two gears of like diameter in mesh with and driven by said drive gear in the same direction, a crank throw member on one gear, a connecting rod attached at one of its ends to the crank throw member and pivoted at its other end to the needle bar intermediate the ends of 'the bar for reciprocating the same, a lever pivoted at one end and eccentrically driven at its opposite end by the other of the said two gears to oscillate the lever about its pivot, and guides on said lever for guiding the needle bar during its vertical reciprocation, said guides co operating with the needle bar at opposite sides of the point of connection of the connecting rod and needle bar for oscillating said needle bar during its reciprocating movements.

12. In a sewing machine, the combination of a vertically reciprocable needle bar, a drive gear for reciprocating said bar, two gears of like diam-' eter in mesh with and driven by said drive gear in the same direction, a crank throw member on one gear, a connecting rod attached at one of its ends to the crank throw member and pivoted at its other end to the needle bar intermediate the ends of the bar for reciprocating the same, a lever pivoted at one end and eccentrically driven at its opposite end by the other of the said two gears to oscillate the lever about its pivot, guides on said lever for guiding the needle bar during its vertical reciprocation, said guides cooperating with the needle bar at opposite sides of the point of connection of the connecting rod. and needle bar for oscillating said needle bar during its reciprocating movements, andmeans for supplying lubricant from a common reservoir to a plurality] of moving parts of the machine.

13. In a sewing machine, the combination of-a] vertically reciprocable needle bar, a connecting rod pivotally attached at one of its ends to said bar for reciprocating the same, an oscillatable lever mounted at one end upon a fixed pivot and associated with the needle bar for imparting a forward and rearward oscillatory movement to.

the needle bar during its reciprocation, a pair of spaced gears of equal diameter, an eccentric con- 1 nection between said gears and said connecting l rod, a second pair of gears of equal diameter, an eccentric connection between said second pair i of gears and said oscillatable lever, and a pair of driving gears of like diameter having a common huband meshing with both pairs of equal sized 1 gears.

14. In asewing machine, the combination of 1 a vertically reciprocable needle bar, a connecting j rod attached at one end to saidbar for reciprocating the same, an oscillatable lever associated f with the needle bar for imparting a forward and 1 rearward oscillatory movement to .the needle bar during its reciprocation, a pair of spaced gears of equal diameter, an eccentric connection be- 15. In a sewing machine, thecombination of a vertically reciprocable needle bar, a connecting 1 rod attached at one end to said. bar for reciprocating the same, an oscillatable lever associatedwith the needle bar for imparting a forward and 1 rearward oscillatory movement to thegneedle bar during its reciprocation, a pair of spaced gears 1 of 7 equal diameter, an eccentric connection bej tween said connecting rod and interposed be- 1 tween said connecting rod and interposed bei l tween said pair of gears, a second pair of-gears of equal diameter, an eccentric connection between said oscillatable lever and said second pair 3 of gears, a common driving gear meshing with 1 both pairs of gears, and ahousing for enclosing 3 said gears and said eccentric connections.

tween said pair of gears, a second pair of gears of equal diameter, aneccentric connection between said oscillatable lever and saidsecond pair of gears, a common driving gear meshing with both pairs of gears, a housing for enclosing said mon driving gear meshing with the spaced gears,

a connecting rod eccentrically connectedto one of said pair of gears and to said needlebar for vertically reciprocating the needle bar, an oscil-. latable lever eccentrically connected tothe other of said pair of gears for imparting a forward and rearward oscillatory movement to the needle bar during its reciprocation, and a looper adapted to cooperate with said needle.

17. In a sewing machine, the combination of a vertically reciprocable'needle bar, driving mechanism for said bar comprising a pair of spaced gears of equal diameter, a connecting rod eccentrically connected to said spaced gears and to, said needle bar for vertically reciprocating the needle bar, an oscillatable lever associated with said needle bar, a second pair of spaced gears 01 equal diameter, an eccentric connection between the oscillatable lever and said second pair of gears for imparting a forward and rearward oscillatory movement to the needle bar during its f reciprocation, and a common driving gear meshing with both pairs of spaced gears, the connection between said connecting rod and needle bar being intermediate the ends of said bar.

EUGENE o. ZABLOCKI.

CERTIFICATE OF CORRECTION. Patent No. 2,260,205 October 21, 191 .1.

EUGENE C. zABLCCIcI.

It is hereby certified that error appears in the printed specificati n of the above numbered patent requiring correction as follows: Page 5, first column, line 1 claim 6, for the word "of" read --to-; andthat the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 16th day or December, A. D. 19141.

7 Henry Van Arsdale, (Seal) Acting Commissioner of Patents. 

